upgrade to rails 3.2
fix broken specs from rails 3.2 upgrade
fix edit_order_detail vs order_detail_edit generation problem

rails 3.2 generates edit_order_detail as the class instead of the
previous order_detail_edit
get rid of deprecations

- The InstanceMethods module inside ActiveSupport::Concern will be no
longer included automatically
- partial does not need explicit template handler
add new settings for rails 3.2

mass assignment sanitizer (but disabled for now)
explain slow queries
Merge branch 'upgrades' into rails_3.2_take2

Conflicts:
	Gemfile.lock
monkey patch for awesome_nested_set

SQL error in oracle. See
https://github.com/collectiveidea/awesome_nested_set/pull/187
Merge pull request #31 from tablexi/rails_3.2

Upgrade to Rails 3.2